Expert tutorials, guides, and tips on Linux, DevOps, and IT Administration
Level up your SSH skills with 15 practical tips: multiplexing, tunnels, jump hosts, agent forwarding, config file tricks, and security hardening....
Learn how to create a bulletproof Linux disaster recovery plan. From backup verification to automated failover — protect your servers from catastrophic data loss....
Set up automated, encrypted Linux backups with rsync and Borg Backup. Complete guide with cron schedules, retention policies, and monitoring scripts....
Slow queries killing your application? This hands-on guide covers 10 proven PostgreSQL optimization techniques — from indexing strategies and query planning to connection pooling and vacuum tuning — used by DBAs managing terabyte-scale databases....
The cybersecurity industry is booming, with over 3.5 million unfilled positions globally. This comprehensive guide maps out the career path from entry-level SOC analyst to senior penetration tester, with recommended resources at every stage....
Containers have evolved from a developer convenience to the backbone of modern infrastructure. This guide walks you through building a production-ready container stack — from your first Dockerfile to a fully orchestrated Kubernetes cluster....
We're thrilled to announce that Dargslan has officially reached 150 published eBooks — a major milestone in our mission to build the most comprehensive IT & programming eBook library. Here's a look at how we got here and what's coming next....
Boost your productivity with 25 essential Linux terminal tricks. From keyboard shortcuts and command history hacks to process management and file manipulation one-liners that every sysadmin should know....
Master PostgreSQL database administration on Linux. Covers installation, user management, database creation, queries, indexing, backup and restore, replication, security hardening, performance tuning, and monitoring....
Master Python programming on Linux from zero to productive developer. Covers installation, virtual environments, data types, functions, OOP, file handling, automation scripts, web scraping, API integration, database access, and real-world project ideas....
Master PowerShell for Windows Server management. Covers essential cmdlets, Active Directory management, server monitoring, automated reporting, remote administration, and practical scripts for daily sysadmin tasks....
A hands-on guide to setting up your AI and machine learning development environment on Linux. Covers Python setup, essential libraries, your first ML model, GPU configuration, and practical projects you can build today....